#pragma once
#include<iostream>
using namespace std;
#include<unistd.h>

typedef void (*work_t)(int);
typedef void (*task_t)(int, pid_t);

void PrintLog(int fd, pid_t pid)
{
    cout << "sub process: " << pid << ", fd: " << fd<< ", task is : printf log task\n" << endl;
}

void ReLoadConf(int fd, pid_t pid)
{
    cout << "sub process: " << pid << ", fd: " << fd<< ", task is :reload conf task\n" << endl;
}

void ConnectMysql(int fd, pid_t pid)
{
    cout << "sub process: " << pid << ", fd: " << fd<< ", task is : connect mysql task\n" << endl;
}

task_t task[3] = {PrintLog, ReLoadConf, ConnectMysql};

uint32_t NextTask()
{
    return rand() % 3;
}

void worker(int fd)
{
    while (true)
    {
        uint32_t command_code = 0;
        ssize_t n = read(0, &command_code, sizeof(command_code));
        if(n == sizeof(command_code))
        {
            if(command_code>=3) continue;
            task[command_code](fd, getpid());
        }
        else if(n == 0)
        {
            cout<<"sub process: "<<getpid()<<"quit now..."<<endl;
        }
    }
}